Shock absorber



Apr-i128, 1925. 1,535,921

C. LAMPRE snocx ABSORBER Filed Auz. 25, 1922 2 Sheets-Sheet 1 6355a mp fe WITNESS: A'ITORNEY April 28,1925. 1,535,921

C-LAMPRE SHOCK ABSORBER Filed Auz. 25, 1922 2 Sheets-Sheet 2 AxAx;

' E I E? J I I y/fl l l q I I 76 I 5 I INVENTOR ATTORNEY WITNESS:

Patented Apr. 28, 1925.

OFFICE- CELESTIN LAMPRE, or ZELYRIA, OHIO.

SI-IOQK ABSORBER.

Application f led. August 25, 192?. Serial N0. 5i34,316.

ToaYZ whom it may concern..-

Be it known that I. GELESTIN Lmvrrnn, a. citizen of the United States, residing at of Ohio, have invented new and useful Inn provements in Shock Absorbers, of which the following is a specification.

This invention relates to shock absorbers,

the general objectof the invention being to provide means for resisting the upward movement of the body of the vehicle, the device permitting the body to move down wardly freely.

l-inother object of the invention is to providemeans whereby the device will charge itself with air on the downward movement of thebody and also toprovide means to check the escape of this air on the upward movement of the body.

The invention also consists in certain other features of construction and in the combination and arrangement of the sev eral parts to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like orcorresponding parts throughout the sev eral views, and in which 2* Figure 1 is a front view of an automob le showing my invention in use.

. Figure 2 is an enlarged elevation of the device.

' Figure 8 is a longitudinal section view. Figures is a section on line 4-4l of Fig ure 3.

Figure 5 is a section on line 5--5 of Figure 3.

In these views 1 indicates a cylinder which has its upper end threaded to receive a collar 2 of a cap 3, this cap having an airbile by the universal joint 7. A grease cup port 4 therein. A collar 5 engages the upper end of the cylinder and is threaded to the threaded part thereof and said collar is fastened to the frame 6 of the automo- 8 is carried by the collar, said cup communieating with the groove 9 in the collar, the cylinder having holes 10 therein for permitting the lubricant to pass from the groove into the "cylinder. A second cylinder 11 is arranged in the first cylinder, thebottom of the second cylinder having an arm 12 thereon "which is connected by the universal joint 13 with the bracket 14 which is connected with the axle 15 of the vehicle. -The V p top 16 of the second cylinder is provided Elyria, in the county of Lorain and State with a small hole 17 for the ingress and egress of air. A piston 18 is arranged in the second cylinder, the hollow piston rod 19 of which passes through the bottom of the second cylinder and is connected with the bottom of the first cylinder as shown in 20. A grease cup or coupling :21 is connected with the hollow piston rod and the upper end of this rod is connected with the passages 22 so that the pistoncan be lubricated.

From the above it will be seen that the outer cylinder is connected with the body of the car and that the second cylinder is connected with the axle. its the piston is con nected with the outer cylinder it will move with said cylinder so that as the car moves downwardly air will be drawn into theinner cylinder by the downward movement of the piston and when the body rebounds this motion will be checked owing to the trapped air in the upper end of the inner cylinder acting against the piston. This air will slowly escape through the hole 17. will. only work one way as it will charge itself on the downward movement of the body and will act to check the upper movement of the body. In order to allow for this ease of movement in a downward direction, the air contained in the inner cylinder is allowed to leak past the piston 18. However,-suiiicient air is trapped between this piston 18 and the top 16 as to provide an air cushion upon the rebound of the body.

It is thought from the foregoing dcscription that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, providing that such changes fall within the scope of theappended claims.

having thus described my invention what I claim is A shock absorber comprising a cylinder open at its lower end and provided with a pair of divergent arms and also having a longitudinal slot, a casting supported between the arms and provided with a lubricant passage, a tubular piston rod supported. by the casting and arranged within the cylinder and having communication with the unani- Thus the device lubricant passage, means for supplying lubricant to said passage, a second cylinder slidnl'ile Within the first mentioned cylinder and provided with a bleed opening at its upper end, an arm extending laterally from the lower end of the last mentioned cylinder and disposed between the walls of the slot and adapted to be opei'atively eonneet ed with part of an automobile suspension spring, and means carried by the upper end of the first mentioned cylinder for connect ing the same to a rigid part of an automobile.

In testimony whereof I zifiix my signature.

CELESTIN LAMPRE. 

